> For the complete documentation index, see [llms.txt](https://docs.greennode.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.greennode.ai/vstorage/object-storage/vstorage-hcm03/identity-and-access-management/managing-vstorage-access-account/service-account/authorization-with-service-account.md).

# Authorization with Service Account

To use the vStorage APIs, users will use the client ID and the client secret keys to be authorized via the authorization server (<https://iamapis.vngcloud.vn/accounts-api/v2/auth/token>) using the OAuth2 method.

**Header**

> 'Authorization':'Basic Base64(clientID:clientSecret)'

**Request body**

> 'grant\_type':'client\_credentials'
>
> 'scope':'email'

**Response**

> 'token\_type':'bearer'\
> 'access\_token':'koxoQrfdAhCFIRl1Sy897kRuHcOlswcW'\
> 'expires\_in':7200

If the credentials are authorized, an **access\_token** will be returned. Users will use this **access\_token** to access resources from the resource server.

**Example:**

> curl -X POST '<https://iamapis.vngcloud.vn/accounts-api/v2/auth/token'\\>
> -H 'Content-Type: application/json'\
> -H 'Authorization: Basic ZGM3MTYxNTYtMjQwMi00MDg2LTliYWItZGU5OTIxODVlYjU1OmJhYjYzYTZmLWYzOGUtNDZmNC05NjIyLTYzNTQwNGQ4MDFlNQ=='\
> -d '{ "grant\_type": "client\_credentials", "scope":"email" }'
>
> {"token\_type":"Bearer","access\_token":"eyJhbGciOiJSUz......GWug","expires\_in":1800,"refresh\_expires\_in":0}